Ehrlich, Paul R, et al. <br/><br/>
Human ecology: Problems and solutions 

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 - W H Freeman & Co., San Francisco  1973 
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<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental pollution-- Effects of humans-- pollution on ecology
<br/><br/><label>Dewey Class. No.: </label>577.27  EHR-H